Duplicacy and B2 upload speeds

Support
#1

Hi,

I am trying to upload to B2 via Duplicacy web GUI.
I have played around with the threads but it still seems really slow even on 8 threads.

I have a 20mbps upload speeds.

Duplicacy wont seem to go over 6MB/s.

I’m trying to upload 200GB and its saying its going to take 8-12 hours.
Is this normal?

Ive tried looking around for the answer but I’m still kind of confused about threads and why my upload speed is so bad.

Thanks.

#2

20Mbps is 2.5MBps. You are seeing such a high numbers (6MB/s) due to compression

#3

So these speeds are normal?

  • Is it ok to use 6-8 threads?
  • Is there a way to make sure I’m getting the best speeds possible on my 20mbps connection?
  • Is it normal for 200gb upload to B2 to take around 8-12 hours?

Thanks for your help.

#4

B2 provides on average 10Mbps per stream. So 2 threads should suffice.

20Mbps connection can support 2.5MBps therorerica maximum transfer, not taking into account other traffic and overhead. This is absolute maximum you can’t reach much less exceed if you were backing up media or zip archives. Because your data seems to be compressive you get higher effective transfer.

Let’s say if you have a 1GB text file that compresses into 2.5MB file, it will be uploaded in 1 second, giving you effective 1GBps “transfer”. It’s still 2.5MB of actual data transferred of course, but that’s what duplicacy shows.

Check actual speed on your gateway or OS

200*1024MB/2.5MB/s == 82k seconds == 22 hours.

If your data compresses well, including deduplication, it will upload sooner.

#5

I see,

Thank you for your information and advice

Well its good to know these speeds are normal.

Just got to wait i guess and let it run and finish.

I’m assuming the first initial backup is the one that takes the longest and backups after that will be faster.

Cheers.

#6

Yes. Initial backup is resumable btw — so don’t worry about interrupting it if you need to take your machine offline. On the next run it will look like it starts from scratch but already uploaded pieces will not get re-uploaded

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#7

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